Garden tool handle



FIG. 1 is a side view of a garden tool handle, showing my new design;

FIG. 2 is a perspective view thereof; and,

FIG. 3 is a side view thereof turned ninety degrees, wherein the broken line showing of the shovel is provided for purposes of environment and forms no part of the claimed design. 

CLAIM The ornamental design for a garden tool handle, as shown and described. 